US4580663A - Brake jaw bearing arrangement for automotive disc brakes - Google Patents

Brake jaw bearing arrangement for automotive disc brakes Download PDF

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Publication number
US4580663A
US4580663A US06/587,329 US58732984A US4580663A US 4580663 A US4580663 A US 4580663A US 58732984 A US58732984 A US 58732984A US 4580663 A US4580663 A US 4580663A
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United States
Prior art keywords
brake lever
brake
lever arms
pair
lever arm
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/587,329
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English (en)
Inventor
Erhard Lehnert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wabco Westinghouse Steuerungstechnik and Co GmbH
Original Assignee
Wabco Westinghouse Steuerungstechnik and Co GmbH
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6193062&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US4580663(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wabco Westinghouse Steuerungstechnik and Co GmbH filed Critical Wabco Westinghouse Steuerungstechnik and Co GmbH
Assigned to WABCO WESTINGHOUSE STEUERUNGSTECHNIK GMBH & CO., HANNOVER reassignment WABCO WESTINGHOUSE STEUERUNGSTECHNIK GMBH & CO., HANNOVER ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LEHNERT, ERHARD
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/2245—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members in which the common actuating member acts on two levers carrying the braking members, e.g. tong-type brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes

Definitions

  • the present invention relates, in general, to a disc-type brake system and, more particularly, the invention is directed to an improved brake jaw bearing arrangement in a disc-type brake brake lever for vehicular and/or industrial-type uses.
  • Disc brake systems have been known for the last several years. They are in wide use on most of the over-the-road type vehicles, many of the rail vehicles, and in a number of industrial applications. Even so, disc brakes are still a relatively infant technology. Furthermore, in relation to the automotive industry, even if the disc brakes are listed as standard equipment by the manufacturer of the vehicle, it is a technology for which the consumer must pay an added premium; such premium is in the form of a higher base sticker price. Some, but not all, of the major factors associated with the added cost for this improved-type of braking system will be discussed below.
  • Prior art brake jaw bearing arrangements for the brake levers on disc-type brake systems have yet another extremely serious drawback, which contributes to the considerable amount of wear to the component parts.
  • This drawback is the number of parts which must move relative to each other. Obviously, relative movement between such parts adds to the wear and tear of the component parts, and the wear and tear adds to the maintenance costs that must be absorbed by the owner of the vehicle or machinery having such disc brakes.
  • the invention taught in this specification provides an improved brake jaw bearing arrangement, having a minimum number of component parts, for the brake levers of a disc-type brake system useful in automotive, railroad, and industrial applications.
  • the brake jaw bearing arrangement comprises a first brake lever and a second brake lever, which are positioned to rotate in a bearing assembly. Both of the brake levers are equipped with at least one holder for a disc-type brake lining pad on one end thereof. The ends of the brake levers, equipped with the brake lining holders, include a clamp means for holding the disc-type brake pad.
  • An operating mechanism is also provided, which is connected to cooperate with both brake levers in a manner that will cause the ends of the brake levers which carry the disc brake pads to move toward and away from each other during application and release of the brakes, respectively.
  • the bearing device of the invention for the brake levers comprises a bearing pin and a bearing to receive the bearing pin.
  • the bearing pin is torsionally-connected to the brake lever.
  • Another object of the invention is to provide an improved brake jaw bearing arrangement design for the brake levers on disc-type brakes that requires a minimum number of seals to protect the bearings against contamination by extraneous foreign substances.
  • Still another object of the invention is to provide an improved brake jaw bearing arrangement for the brake levers on disc-type brakes which uses a minimal number of parts with the resultant advantage of lower cost and, of even more importance, fewer parts to wear out.
  • Yet another object of the invention is to provide an improved bearing arrangement for the brake levers of disc-type brakes which is less costly to manufacture.
  • a further object of the invention is to provide an improved brake jaw bearing arrangement for the brake levers on automotive-type disc brakes which requires less skill on the part of the mechanic for repair due to the simplicity of design.
  • a still further object of the invention is to provide an improved brake jaw bearing arrangement for the brake levers of disc-type brakes which allows the bearing pin to be torsionally-connected to the brakes.
  • Yet still another object of the invention is to provide an improved brake jaw bearing arrangement for the brake levers of disc-type brakes, which have a minimum number of parts which move relative to one another to thereby reduce wear on individual component parts.
  • Yet still another object of the invention is to provide an improved brake jaw bearing arrangement for the brake levers of disc-type brakes that allows the bearing pin to be constructed in a single piece.
  • An additional object of the invention is to provide an improved brake jaw bearing arrangement for the brake levers of disc-type brakes, which allows not only the bearing pin to be constructed in one piece, but also allows one of the brake levers and the bearing pin to be a single piece.
  • FIG. 1 is a plan view of the brake levers of a brake jaw assembly
  • FIG. 2 is a view, partially in cross-section, of a brake lever of a brake jaw assembly taken along lines II--II of FIG. 1 which shows one form of the invention.
  • FIG. 3 is a side elevation view, partially in cross-section, which shows an alternative embodiment of the invention.
  • FIGS. 1 and 2 of the drawings is a representation of a brake lever and a brake jaw of a vehicular-type disc brake assembly, generally designated 10.
  • the brake lever and brake jaw assembly 10 comprises an upper brake lever arm 12 and a lower brake lever arm 14.
  • the upper brake lever arm 12 includes, intermediate the ends thereof, a threaded aperture 16 therethrough. The purpose of the threaded aperture 16 will be explained hereinafter.
  • the lower brake lever arm 14 also includes, intermediate the ends thereof, an aperture 18.
  • the aperture 18, according to this embodiment of the invention, is unthreaded.
  • the upper brake lever arm 12 and the lower brake lever arm 14, along with the other components, for connections, etc. form a set, generally designated 20.
  • One set of components 20 is positioned on each side of a brake crossbar member 22 to form a complete disc brake jaw assembly 10.
  • a one-piece bearing pin, generally designated 30, is also provided, and serves two functions of primary importance.
  • the bearing pin 30 serves as an axle, around which the upper brake lever arm 12 and the lower brake lever arm 14 are pivotally-connected.
  • the bearing pin, generally designated 30, includes a head 24 and a first threaded portion 26 adjacent the head 24.
  • the head 24 is adapted for holding or turning with conventional wrenches.
  • the first threaded portion 26 is integrally-connected to a second unthreaded portion 28, which serves as the main body of the bearing pin, generally designated 30.
  • the first threaded portion 26 has a larger diameter than the second unthreaded portion 28 of the main body.
  • a third end portion 32, having threads thereon, is formed integral with the second unthreaded portion 28 and has the smallest diameter of the one-piece bearing pin, generally designated 30.
  • body member 34 be cylindrical, other shapes can be used without departing from the spirit of the invention.
  • a cylindrical body member 34 is secured to each end of the brake crossbar member 22. In the final assembled relationship, the cylindrical body member 34 is centrally-located between, and in abutting relationship with, an inside surface of the upper brake lever arm 12 and lower brake lever arm 14.
  • a bearing 36 Disposed within an annular space formed between the inner surface of cylindrical body member 34 and the outer surface of the first portion of the second unthreaded portion 28 of the main body of the bearing pin 30, adjacent the first threaded portion 26, is a bearing 36.
  • the cylindrical body member 34 and the bearing 36 are two of the components mentioned above, which cooperate with the bearing pin, generally designated 30, in maintaining the upper brake lever arm 12 and the lower brake lever arm 14 in the more or less substantially parallel-spaced relationship of the final assembly of each set 20 of the disc brake jaw assembly, generally designated 10.
  • a second bearing 38 is placed over a second portion of the second unthreaded portion 28 of the main body of the bearing pin, generally designated 30, into abutting relationship with the bearing 36.
  • the unthreaded aperture in the lower brake lever arm 14 is then placed over the bearing 38.
  • the bearing 38 fills an annular space formed between the unthreaded aperture 18 of the lower brake lever arm 14 and the second portion of the second unthreaded portion 28 of the main body of the bearing pin, generally designated 30.
  • the bearing 38 thereby provides support for the lower brake lever arm 14.
  • a ring-shaped spring element 40 is placed over the bearing pin, generally designated 30, into mating engagement with the outer surface of the lower brake lever arm 14.
  • a shoulder 42, formed around a spacer element 44, is placed into mating engagement with the ring-shaped spring element 40.
  • a crown nut 46 is then positioned over the smaller end portion 32 of the bearing pin 30 and is held in place by a cotter pin 48.
  • the lower brake lever arm 14 is secured against axial movement and the cotter pin 48 prevents accidental loosening of the crown nut 46.
  • the lower brake lever arm 14 is free to rotate about the bearing pin 30 if necessary for alignment purposes.
  • the cylindrical body member 34 formed as part of the crossbar member 22, has a pair of annular recesses 50 and 52 formed on the outer surface thereof, one on each end; and a pair of resilient seal members 54 and 56 are placed in engagement with these annular recesses 50 and 52 and the inner surface of the upper brake lever arm 12 and the lower brake lever arm 14.
  • the sealing gaskets 54 and 56 shown are O-rings which create a seal at the juncture where the surface of the upper brake lever arm 12 and the lower brake lever arm 14 are engaged by the cylindrical body member 34 to prevent the undesired penetration of dirt or other extraneous foreign matter.
  • the disc brake assembly 10 is equipped for cooperation with an operating mechanism (not shown) for moving a pair of disc brake pads 58 and 60 into and out of engagement with a brake pressure pad, such as a rotor, or the like, (not shown) upon application and release of the brakes, respectively, by the operator of the vehicle.
  • an operating mechanism for moving a pair of disc brake pads 58 and 60 into and out of engagement with a brake pressure pad, such as a rotor, or the like, (not shown) upon application and release of the brakes, respectively, by the operator of the vehicle.
  • the operating mechanism and the brake pressure pad are not new.
  • the upper brake lever arm 12 (FIGS. 1 and 2) is provided with an aperture 62
  • the lower brake lever arm 14 (FIGS. 1 and 2) is provided with an aperture 64.
  • a bearing 66 Fitted within the aperture 62 is a bearing 66 and within the aperture 64 is another bearing 68.
  • the journal pin 70 of a roll 72 is placed for rotation in bearing 66 and the journal pin 74 of the roll 72 is placed for rotation in bearing 68.
  • the face of the roll 72 now serves as an abutment surface 73 for the operating mechanism (not shown).
  • the roll 72 provides another function in the final assembly of the brake jaw arrangement in maintaining the upper brake lever arm 12 and the lower brake lever arm 14 in a more or less substantially parallel-spaced relationship.
  • the disc brake assembly 10 is equipped with a disc brake pad 58, secured to a brake pad holder 76, and disc brake pad 60 is secured to a brake pad holder 78.
  • the brake pad holders 76 and 78 are secured for limited rotational movement to the upper brake lever arm 12 (FIGS. 1 and 2) and the lower brake lever arm 14 (FIGS. 1 and 2) by a pin 80 in the manner to be described.
  • the upper brake lever arm 12 (FIGS. 1 and 2) has an aperture 82 at the end thereto which has a bearing 84 disposed therein.
  • the aperture 82 of the upper brake lever arm 12 and the bearing 84 are positioned between a pair of upstanding legs 86 and 88 secured to the back of the holder 78.
  • Upstanding leg 86 has an aperture 90 and upstanding leg 88 includes an aperture 92.
  • the lower brake lever arm 14 (FIGS. 1 and 2) is similarly equipped with an aperture 94 at the end thereof and includes a bearing 96 disposed therein.
  • the aperture 94 of the lower brake lever arm 14 and the bearing 96 are positioned between a pair of upstanding legs 98 and 100 also secured to the back of holder 78.
  • Upstanding leg 98 has an aperture 102 and upstanding leg 100 includes an aperture 104.
  • a washer 106 is placed over an end of pin 80 adjacent the outer surface of the upstanding leg 100.
  • the washer 106 is held in place by a suitable means such as a cotter pin 108.
  • the upstanding legs 88 and 98 combine with the roll 72 and the cylindrical body member 34 in maintaining the upper brake lever arm 12 and the lower brake lever arm 14 in a more or less substantially parallel-spaced relationship.
  • FIG. 3 for a showing of one side of a brake jaw assembly according to an alternate arrangement for connecting a set of brake levers, generally designated 110, to the brake crossbar member (not shown). It being understood that it requires two sets of brake lever assemblies 110 to form the brake jaw assembly.
  • a set of brake levers 110 includes an upper brake lever arm 112 and a lower brake lever arm 114. Connected to the inside surface of the upper brake lever arm 112 intermediate the ends thereof is a neck portion 116. Neck portion 116 extends downwardly from the inside surface of the upper brake lever arm 112 for a predetermined distance. An aperture 118 is provided through the upper brake lever arm 112 and the neck portion 116.
  • a neck portion 120 there is connected to the inside surface of the brake lever arm 114, a neck portion 120 intermediate the ends thereof.
  • the neck portion 120 extends upwardly from the inside surface of the lower brake lever arm 114 for a predetermined distance. It is presently contemplated, and in the specific embodiment shown, that the length of the neck portion 116 is substantially equal to the length of the neck portion 120.
  • An aperture 122 is provided through the lower brake lever arm 114 and the neck portion 120.
  • a bearing 124 Positioned on the outer surface of neck portion 116 is a bearing 124 and on the outer surface of the neck portion 120 is a bearing 126.
  • the upper brake lever arm 112, neck portion 116, and the bearing 124 are then placed into the top of a cylindrical body member 128 which is connected to one end of a brake crossbar member (not shown in FIG. 3).
  • the lower brake lever arm 114, neck portion 120, and bearing 126 are then placed into the bottom of the cylindrical body member 128.
  • a pin 130 is then placed through the aperture 118 of the upper brake lever arm 112 and the neck portion 116, and also through the aperture 122 of the lower brake lever arm 114 and the neck portion 120.
  • a crown nut 132 is then threaded onto one end of pin 130 against a washer 134 and held in place by a cotter pin 136.
  • both the upper brake lever arm 112 and the lower brake lever arm 114 are free to rotate within the bearings 124 and 126 while the pin 130 is restrained against relative movement therebetween. Also, the neck portions 116 and 120 serve the function of acting as bearing pins for the brake lever arms 112 and 114.
  • the left-hand side of the brake assembly 110 is equipped for cooperation with an operating mechanism (not shown) for moving a pair of disc brake pads into and out of engagement with a brake pressure pad, such as a rotor, or the like (not shown) upon application and release of the brakes, respectively, by the operator of the vehicle.
  • a brake pressure pad such as a rotor, or the like
  • the disc brake assembly 110 is equipped with a brake pad holder 78.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
US06/587,329 1983-03-10 1984-03-07 Brake jaw bearing arrangement for automotive disc brakes Expired - Lifetime US4580663A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3308499 1983-03-10
DE3308499A DE3308499C2 (de) 1983-03-10 1983-03-10 Bremszange für eine Scheibenbremse

Publications (1)

Publication Number Publication Date
US4580663A true US4580663A (en) 1986-04-08

Family

ID=6193062

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/587,329 Expired - Lifetime US4580663A (en) 1983-03-10 1984-03-07 Brake jaw bearing arrangement for automotive disc brakes

Country Status (4)

Country Link
US (1) US4580663A (de)
EP (1) EP0121601B1 (de)
AT (1) ATE23916T1 (de)
DE (2) DE3308499C2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638892A (en) * 1984-12-21 1987-01-27 Knorr-Bremse Ag Link joint between a brake cylinder and a brake linkage
US4821846A (en) * 1986-05-09 1989-04-18 J. M. Voith Gmbh Actuating device for a disk brake
US5101939A (en) * 1990-04-13 1992-04-07 Otis Elevator Company Disk brake for elevator
CN1297430C (zh) * 2000-07-07 2007-01-31 沃伊思特博两合公司 驱动至少一个齿轮传动轴、尤其一个齿轮系轴的传动单元
US20080000731A1 (en) * 2006-06-30 2008-01-03 Wabtec Holding Corporation Power screw disc brake caliper assembly
US20120037464A1 (en) * 2008-10-22 2012-02-16 Werner Stocker Disk brake for a railway vehicle having an electrically insulated brake lining retainer
US9888936B2 (en) 2010-09-27 2018-02-13 Smith & Nephew, Inc. Device and methods for use during arthroscopic surgery

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4939444B2 (ja) 2008-01-09 2012-05-23 曙ブレーキ工業株式会社 ディスクブレーキの防振ゴムによるブレーキトルク受け機構

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2374859A (en) * 1943-10-02 1945-05-01 Budd Wheel Co Brake mechanism
DE2026545A1 (de) * 1970-05-30 1971-12-16 Westinghouse Bremsen und Apparate bau GmbH, 3000 Hannover Bremseinheit fur Scheibenbremsen von Fahrzeugen, insbesondere von Schienen fahrzeugen
US3645364A (en) * 1968-06-11 1972-02-29 Bergische Stahlindustrie Self-adjusting braking apparatus
US3986584A (en) * 1975-03-20 1976-10-19 Westinghouse Air Brake Company Fail-safe disc brake with spring actuated slack adjuster
GB1527135A (en) * 1975-04-04 1978-10-04 Girling Ltd Railway vehicle disc brakes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827986A (en) * 1953-06-05 1958-03-25 American Steel Foundries Rotor brake
GB786090A (en) * 1955-04-02 1957-11-13 Girling Ltd Improvements in or relating to disc brakes for railway vehicles
GB1361988A (en) * 1971-08-06 1974-07-30 Radiochemical Centre Ltd Technetium-99m generators
DE2449853C3 (de) * 1974-10-19 1978-09-14 Knorr-Bremse Gmbh, 8000 Muenchen Scheibenbremse für Schienenfahrzeuge
DE2528480C2 (de) * 1975-06-26 1986-09-11 Knorr-Bremse AG, 8000 München Sicherung für eine längeneinstellbare Zugstange von Bremszangen für Scheibenbremsen
DE2656052C2 (de) * 1976-12-10 1985-02-28 Knorr-Bremse GmbH, 8000 München Scheibenbremse, insbesondere für Schienenfahrzeuge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2374859A (en) * 1943-10-02 1945-05-01 Budd Wheel Co Brake mechanism
US3645364A (en) * 1968-06-11 1972-02-29 Bergische Stahlindustrie Self-adjusting braking apparatus
DE2026545A1 (de) * 1970-05-30 1971-12-16 Westinghouse Bremsen und Apparate bau GmbH, 3000 Hannover Bremseinheit fur Scheibenbremsen von Fahrzeugen, insbesondere von Schienen fahrzeugen
US3986584A (en) * 1975-03-20 1976-10-19 Westinghouse Air Brake Company Fail-safe disc brake with spring actuated slack adjuster
GB1527135A (en) * 1975-04-04 1978-10-04 Girling Ltd Railway vehicle disc brakes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638892A (en) * 1984-12-21 1987-01-27 Knorr-Bremse Ag Link joint between a brake cylinder and a brake linkage
US4821846A (en) * 1986-05-09 1989-04-18 J. M. Voith Gmbh Actuating device for a disk brake
US5101939A (en) * 1990-04-13 1992-04-07 Otis Elevator Company Disk brake for elevator
CN1297430C (zh) * 2000-07-07 2007-01-31 沃伊思特博两合公司 驱动至少一个齿轮传动轴、尤其一个齿轮系轴的传动单元
US20080000731A1 (en) * 2006-06-30 2008-01-03 Wabtec Holding Corporation Power screw disc brake caliper assembly
US20120037464A1 (en) * 2008-10-22 2012-02-16 Werner Stocker Disk brake for a railway vehicle having an electrically insulated brake lining retainer
CN102197237B (zh) * 2008-10-22 2014-10-08 奥地利西门子公司 用于轨道车辆的具有电绝缘的制动衬片支架的盘式制动器
US9888936B2 (en) 2010-09-27 2018-02-13 Smith & Nephew, Inc. Device and methods for use during arthroscopic surgery

Also Published As

Publication number Publication date
ATE23916T1 (de) 1986-12-15
EP0121601A1 (de) 1984-10-17
DE3308499C2 (de) 1995-11-02
DE3367967D1 (de) 1987-01-15
EP0121601B1 (de) 1986-11-26
DE3308499A1 (de) 1984-09-13

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